﻿//  
//  Copyright (c) 2012-2025, Arsenal Consulting, Inc. (d/b/a Arsenal Recon) <http://www.ArsenalRecon.com>
//  This source code and API are available under the terms of the Affero General Public
//  License v3.
// 
//  Please see LICENSE.txt for full license terms, including the availability of
//  proprietary exceptions.
//  Questions, comments, or requests for clarification: http://ArsenalRecon.com/contact/
// 
//  This file provies some attributes that are available in later versions of .NET
//  but not in .NET Framework 4.8, to allow sharing code that uses these attributes
//  across all target frameworks.
//

using System.Runtime.CompilerServices;

[assembly: InternalsVisibleTo("Arsenal.ImageMounter")]
[assembly: InternalsVisibleTo("Arsenal.ImageMounter.Devio")]
[assembly: InternalsVisibleTo("Arsenal.ImageMounter.Devio.Interop")]
[assembly: InternalsVisibleTo("aim_cli")]

#pragma warning disable IDE0079 // Remove unnecessary suppression
#pragma warning disable IDE0130 // Namespace does not match folder structure

#if !NETSTANDARD2_1_OR_GREATER && !NETCOREAPP

namespace System.Diagnostics.CodeAnalysis
{
    /// <summary>Specifies that null is allowed as an input even if the corresponding type disallows it.</summary>
    [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property, Inherited = false)]
    internal sealed class AllowNullAttribute : Attribute { }

    /// <summary>Specifies that null is disallowed as an input even if the corresponding type allows it.</summary>
    [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property, Inherited = false)]
    internal sealed class DisallowNullAttribute : Attribute { }

    /// <summary>Specifies that an output may be null even if the corresponding type disallows it.</summary>
    [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue, Inherited = false)]
    internal sealed class MaybeNullAttribute : Attribute { }

    /// <summary>Specifies that an output will not be null even if the corresponding type allows it. Specifies that an input argument was not null when the call returns.</summary>
    [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue, Inherited = false)]
    internal sealed class NotNullAttribute : Attribute { }

    /// <summary>Specifies that when a method returns <see cref="ReturnValue"/>, the parameter may be null even if the corresponding type disallows it.</summary>
    /// <remarks>Initializes the attribute with the specified return value condition.</remarks>
    /// <param name="returnValue">
    /// The return value condition. If the method returns this value, the associated parameter may be null.
    /// </param>
    [AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
    internal sealed class MaybeNullWhenAttribute(bool returnValue) : Attribute
    {

        /// <summary>Gets the return value condition.</summary>
        public bool ReturnValue { get; } = returnValue;
    }

    /// <summary>Specifies that when a method returns <see cref="ReturnValue"/>, the parameter will not be null even if the corresponding type allows it.</summary>
    /// <remarks>Initializes the attribute with the specified return value condition.</remarks>
    /// <param name="returnValue">
    /// The return value condition. If the method returns this value, the associated parameter will not be null.
    /// </param>
    [AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
    internal sealed class NotNullWhenAttribute(bool returnValue) : Attribute
    {

        /// <summary>Gets the return value condition.</summary>
        public bool ReturnValue { get; } = returnValue;
    }

    /// <summary>Specifies that the output will be non-null if the named parameter is non-null.</summary>
    /// <remarks>Initializes the attribute with the associated parameter name.</remarks>
    /// <param name="parameterName">
    /// The associated parameter name.  The output will be non-null if the argument to the parameter specified is non-null.
    /// </param>
    [AttributeUsage(AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue, AllowMultiple = true, Inherited = false)]
    internal sealed class NotNullIfNotNullAttribute(string parameterName) : Attribute
    {

        /// <summary>Gets the associated parameter name.</summary>
        public string ParameterName { get; } = parameterName;
    }

    /// <summary>Applied to a method that will never return under any circumstance.</summary>
    [AttributeUsage(AttributeTargets.Method, Inherited = false)]
    internal sealed class DoesNotReturnAttribute : Attribute { }

    /// <summary>Specifies that the method will not return if the associated Boolean parameter is passed the specified value.</summary>
    /// <remarks>Initializes the attribute with the specified parameter value.</remarks>
    /// <param name="parameterValue">
    /// The condition parameter value. Code after the method will be considered unreachable by diagnostics if the argument to
    /// the associated parameter matches this value.
    /// </param>
    [AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
    internal sealed class DoesNotReturnIfAttribute(bool parameterValue) : Attribute
    {

        /// <summary>Gets the condition parameter value.</summary>
        public bool ParameterValue { get; } = parameterValue;
    }

    /// <summary>Specifies that the method or property will ensure that the listed field and property members have not-null values.</summary>
    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Property, Inherited = false, AllowMultiple = true)]
    internal sealed class MemberNotNullAttribute : Attribute
    {
        /// <summary>Initializes the attribute with a field or property member.</summary>
        /// <param name="member">
        /// The field or property member that is promised to be not-null.
        /// </param>
        public MemberNotNullAttribute(string member) => Members = [member];

        /// <summary>Initializes the attribute with the list of field and property members.</summary>
        /// <param name="members">
        /// The list of field and property members that are promised to be not-null.
        /// </param>
        public MemberNotNullAttribute(params string[] members) => Members = members;

        /// <summary>Gets field or property member names.</summary>
        public string[] Members { get; }
    }

    /// <summary>Specifies that the method or property will ensure that the listed field and property members have not-null values when returning with the specified return value condition.</summary>
    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Property, Inherited = false, AllowMultiple = true)]
    internal sealed class MemberNotNullWhenAttribute : Attribute
    {
        /// <summary>Initializes the attribute with the specified return value condition and a field or property member.</summary>
        /// <param name="returnValue">
        /// The return value condition. If the method returns this value, the associated field or property member will not be null.
        /// </param>
        /// <param name="member">
        /// The field or property member that is promised to be not-null.
        /// </param>
        public MemberNotNullWhenAttribute(bool returnValue, string member)
        {
            ReturnValue = returnValue;
            Members = [member];
        }

        /// <summary>Initializes the attribute with the specified return value condition and list of field and property members.</summary>
        /// <param name="returnValue">
        /// The return value condition. If the method returns this value, the associated field and property members will not be null.
        /// </param>
        /// <param name="members">
        /// The list of field and property members that are promised to be not-null.
        /// </param>
        public MemberNotNullWhenAttribute(bool returnValue, params string[] members)
        {
            ReturnValue = returnValue;
            Members = members;
        }

        /// <summary>Gets the return value condition.</summary>
        public bool ReturnValue { get; }

        /// <summary>Gets field or property member names.</summary>
        public string[] Members { get; }
    }
}

#endif

#if !NET5_0_OR_GREATER

namespace System.Runtime.CompilerServices
{
    /// <summary>
    /// Reserved to be used by the compiler for tracking metadata. This class should not be used by developers in source code.
    /// </summary>
    internal static class IsExternalInit
    {
    }
}

namespace System.Runtime.Versioning
{
    //
    // Summary:
    //     Base type for all platform-specific API attributes.
    internal abstract class OSPlatformAttribute : Attribute
    {
        //
        // Summary:
        //     Gets the name and optional version of the platform that the attribute applies
        //     to.
        //
        // Returns:
        //     The applicable platform name and optional version.
        public string PlatformName
        {
            get;
        }

        private protected OSPlatformAttribute(string platformName)
        {
            PlatformName = platformName;
        }
    }

    //
    // Summary:
    //     Indicates that an API is supported for a specified platform or operating system.
    //     If a version is specified, the API cannot be called from an earlier version.
    //     Multiple attributes can be applied to indicate support on multiple operating
    //     systems.
    [AttributeUsage(AttributeTargets.Assembly | AttributeTargets.Module | AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Enum | AttributeTargets.Constructor | AttributeTargets.Method | AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Event | AttributeTargets.Interface, AllowMultiple = true, Inherited = false)]
    internal sealed class SupportedOSPlatformAttribute(string platformName) : OSPlatformAttribute(platformName)
    {
    }
}

#endif
